Used Chemiclean in the past to deal with cyano...never had a problem besides skimmer freaking out for a while. Started a treatment last Friday afternoon. Saturday morning when the tank lights came on, I noticed my 2" yellow coris wrasse was missing. I've never lost fish during a treatment of any kind. Whenever I dose chemiclean, I do let my skimmer overflow into the sump to help oxygenate water. Needless to say there's a good amount of micro bubbles in the system for a few days until skimmet calms down. Im wondering if he's hiding in the sand because there bubbles freaked him out. I know from past experience, that you dont wanna go sifting through sand to find a freaked out wrasse. Hasn't even come out to eat. All the other fish seem normal, eating, etc. What do you guys think?
